.da {
  display: flex;
}

.da .da-da {
  display: flex;
}

.da .da-da div {
  width: 50px;
  height: 30px;
  border: 1px solid #ccc;
  margin-left: 10px;
  border-radius: 5px;
  text-align: center;
  line-height: 30px;
}

.da .da-da div.active {
  border: 1px solid red;
  color: red;
}
